Okouchi, H. (2003).
Stimulus generalization of behavioral history.
Journal of the Experimental Analysis of Behavior,
80, 173-186.
Undergraduates responded under a variable-ratio 30 schedule in
the presence of a 25-mm long line and on a
differential-reinforcement-of-low-rate 6-s schedule when a 13-mm
long line was present. Following this, a line-length continuum
generalization test was administered under a fixed-interval 6-s
schedule (Experiment 1) or extinction (Experiment 2). In both
experiments, obtained generalization gradients conformed to
typical postdiscrimination gradients. Responses were frequent
under stimuli physically similar to the 25-mm line and infrequent
under stimuli physically similar to the 13-mm line. The
generalization gradients were generally asymmetric with peak
response rates occurring at line lengths greater than 25 mm.
Key words: behavioral history, stimulus generalization, variable-ratio schedules,
differential-reinforcement-of-low-rate schedules, fixed-interval schedules, screen touch,
humans